pgsql: Use the term "bundled distribution" instead of "official

Log Message:
-----------
Use the term "bundled distribution" instead of "official distribution" in
configure warnings.

Modified Files:
--------------
pgsql:
configure (r1.673 -> r1.674)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure?r1=1.673&r2=1.674)
pgsql/config:
missing (r1.5 -> r1.6)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/missing?r1=1.5&r2=1.6)
perl.m4 (r1.6 -> r1.7)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/perl.m4?r1=1.6&r2=1.7)
programs.m4 (r1.26 -> r1.27)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/programs.m4?r1=1.26&r2=1.27)